Mechanical properties and microstructures of China low activation martensitic steel compared with JLF-1
Mechanical properties and microstructures of China low activation martensitic steel compared with JLF-1
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DOI：
10.1016/j.jnucmat.2007.03.012
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发表时间：
2007-08-01
影响因子：
3.1
通讯作者：
Muroga, T.
中科院分区：
文献类型：
--
作者：
Li, Y.;Huang, Q.;Muroga, T.
比较了CLAM钢和JLF-1钢的拉伸和冲击性能。拉伸试验表明，CLAM钢的室温极限强度和屈服强度分别为670 MPa和512 MPa，873 K时分别为373 MPa和327 MPa。这些值高于JLF-1的测量值。CLAM的韧脆转变温度（DBTT）被认为是171 K，使用三分之一尺寸的夏比V型缺口试样，这是16 K低于JLF-1。SEM和TEM显微组织分析表明，CLAM的原奥氏体晶粒尺寸和板条宽度小于JLF-1。CLAM钢的细晶组织和板条组织被认为是CLAM钢具有较高强度和较低DBTT的主要原因之一。(C)2007 Elsevier B. V.保留所有权利。
The tensile and impact properties of CLAM steel are compared to those of JLF-1 steel. Tensile testing revealed that the ultimate and yield strengths of the CLAM steel are 670 MPa and 512 MPa at room temperature, and 373 MPa and 327 MPa at 873 K, respectively. These values are higher than those measured for JLF-1. The ductile-to-brittle transition temperature (DBTT) of CLAM was found to be 171 K using one-third size Charpy V-notch specimens, which is 16 K lower than that of JLF-1. Microstructural analysis by SEM and TEM indicated that the prior austenite grain size and lath width for CLAM are smaller than those for JLF-1. The finer grain and lath structure is considered to be one of the main reasons for the higher strength and lower DBTT of the CLAM steel. (C) 2007 Elsevier B.V. All rights reserved.